Root canal retreatment involves the removal of the previous crown and packing material, the cleansing of the root canals, and the re-packing and re-crowning of. There are multiple reasons an initial root canal therapy may have been unsuccessful. Before taking on a retreatment case, the clinician must. Endodontic Retreatment Explained. With proper care, even teeth that have had root canal treatment can last a lifetime. But sometimes, a tooth that has been treated doesn't heal properly and can become painful or diseased months or even years after treatment.


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Cracked crown leaking filling material. Curved or narrow canals not treated during the original procedure.


Delay in the placement of restorative devices following the procedure. New decay to the tooth.

New fracture in the treated tooth. Saliva entering the restorative structure.

Procedures for retreatment of failed root canal therapy | Cochrane

Undetected complex canal structures. What does root canal retreatment involve? On the day of the retreatment procedure a local anesthetic will be retreatment of root canal, unless another type of anesthetic has been selected. The affected tooth is isolated with a rubber dam.


The dam protects the tooth during treatment from bacteria and saliva. The amount the dentist can do within a single appointment will much depend on the amount of inflammation present, and the complexity of the treatment. Endodontic surgery is done in the dentist's office. An endodontist, general dentist or oral surgeon can perform retreatment of root canal procedure.

Root Canal Surgery | Root Canal Infection | Endodontic Surgery

First, you will receive a shot to numb the area. Then your dentist will make a small cut incision in the gum near the base of the tooth. He or she will clean out the infected tissue around retreatment of root canal tip apex of the root and shave off the tip.

This procedure is called an apicoectomy. The endodontist will clean the inside of the canal from the root end, and then put a filling in the end of the root.

Root Canal Retreatment

The incision is then stitched. It is typically done only on premolars and front teeth.

Key results There is no evidence that a surgical approach leads to better results compared with non-surgical retreatment at one year or at four or 10 years after intervention. However, people treated surgically reported more pain and swelling during the first week after treatment.

Different surgical techniques were evaluated. Healing at one-year follow-up seemed to be improved by use of ultrasonic devices, instead of the traditional burfor root-end preparation.

There was some evidence of better healing at one-year follow-up when root-ends were filled with mineral trioxide aggregate compared with retreatment of root canal being treated by smoothing of orthograde gutta percha root filling. Use of a graft composed of a gel enriched with the patient's own platelets applied to the defect during the surgical procedure significantly reduced postoperative pain.

Exposure to a low energy level laser did not apparently reduce pain at the surgical site. A small gingival retreatment of root canal may preserve the gum between two adjacent teeth, improving the aesthetic appearance and causing less pain after surgery.

The Second Time Around: Possible Retreatment or Surgery

There was no evidence that use of antibiotics reduces the occurrence of postoperative infection although when the procedure is done well, infection is an extremely rare event.

Different ways of enhancing the surgeon's view did not lead to different results at least one year after operation, and results of retreatment were independent of the radiographic technique used to make the diagnosis.

Quality of the evidence We judged the quality of the evidence to be poor; therefore we cannot rely on the findings. Only one study was at low risk of retreatment of root canal ;we judged the majority to be at high risk of bias.